Suitcase



FIG. 1 is a front left perspective view;

FIG. 2 is a front view of the suitcase shown in FIG. 1;

FIG. 3 is a rear view of the suitcase shown in FIG. 1;

FIG. 4 is a right side view of the suitcase shown in FIG. 1; and,

FIG. 5 is a top view of the suitcase shown in FIG. 1.

The broken line showing portions of the back of the suitcase forms no part of the claimed design. 

CLAIM The ornamental design for a suitcase, as shown and described. 